[Purpose] Wave-Intensity (WI) is one of the useful hemodynamic indices of the cardiovascular system. However, effects of vascular stiffness on WI waveform are not well known. In this study, we developed a cardiovascular model that includes an elastic tube as a model of a vessel, and measured WI of the elastic tube. [Methods] We made the cardiovascular model composed of pulsatile pump and circulation circuit. The model of elastic vessels were prepared using styrene-based elastomer material (Aronkasei Co., LTD), which were putted in the circulation circuit. We measured the blood vessel stiffness β(β=ln(P_s/P_d)/[(D_s-D_d)/D_d])and WI (WI=(dP/dt)(dU/dt)) using the ultrasonic diagnostic apparatus. [Results] We were able to measure the blood pressure waveform and blood flow velocity waveform. The calculated β was 46.9 and W₁ is 1990mmHg×m/s³, which were far from human data (β was higher and W₁ was lower than healthy subjects). [Conclusion] Lower β vessel model required to make biological model.